Table 1.

Demographic information about the study population with dengue fever.

Characteristics	Mild1		Severe		Fisher's exact test
Age (median years, 25–75%) 2	39, 28–48		37, 23–53
Sex (M:F) (Patient Number)	7:13		26:13
DENV-1: DENV-3 (Patient Number)	20:0		8:31		p < 0.0001
	%3	N4	%	N
Fever	30	20	8	37
Haemorrhagic manifestations5	35	20	41	37
Petechia	21	19	49	37
Abdominal Pain	19	16	33	36
Thrombocytopenia (<100.000 counts/mm3)	63	19	72	39
Thrombocytopenia (<50.000 counts/mm3)	0	19	46	39
Hipotension6	0	20	67	39
Hemoconcentration7	33	15	10	39
Secondary Infection	26	19	42	33	P = 0.37

¹ See Methods for mild and severe dengue definition.

² Study population with 59 patients with 3–10 days of disease onset.

³ Percentage of positive patients for the measured parameter within the group.

⁴ Number of patients used for the measured parameter within the group.

⁵ Epistaxis, gengivorrhagia, positive tourniquet test, metrorrhagia, bleeding after coughing.

⁶Postural hypotension with decrease in systolic arterial pressure in 20 mmHg in supine position or systolic arterial pressure < 90 mmHg.

⁷ Elevated hematocrit for matched age and sex (women>41%; men >45%) or fluctuation of packed cell volume ≥ 20% during course of illness and recovery.